Florentin Smarandache. Ambiguous Set is a subclass of the Double Refined Indeterminacy Neutrosophic Set, and of the Refined Neutrosophic Set in general. Neutrosophic Sets Syst. [Internet]. 2023 Dec. 11 [cited 2025 Nov. 16];58:639-43. Available from: https://fs.unm.edu/nss8/index.php/111/article/view/3568